Various sensors and solenoids (listed below) provide inputs to ensure the system functions at maximum efficiency.ġ. The HPFP is mounted to the engine and mechanically driven by the camshaft, while the ECU is able to vary the output to match the load requirements of the engine. It is responsible for compressing the fuel, supplied by the Electric Fuel Pump, to the pressure required for High Pressure Injection. The High Pressure Fuel Pump (HPFP) is the main component in this system. They allow manufacturers to produce a low capacity engine that produces higher output while providing improved economy and lower emissions.īasically, the Direct Injection system injects a precise amount of fuel directly into the combustion chamber at much higher pressures than traditional petrol injection systems, allowing the engine to run leaner and more efficiently. ![]() Direct Injection petrol engines are now fitted to more than 2 million vehicles in Australia and New Zealand.
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